70512145 has 12 divisors (see below), whose sum is σ = 93006900. Its totient is φ = 51281120.

The previous prime is 70512133. The next prime is 70512149. The reversal of 70512145 is 54121507.

It can be written as a sum of positive squares in 2 ways, for example, as 27531009 + 42981136 = 5247^2 + 6556^2 .

It is not a de Polignac number, because 70512145 - 2¹⁹ = 69987857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70512149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57670 + ... + 58879.

It is an arithmetic number, because the mean of its divisors is an integer number (7750575).

Almost surely, 2^70512145 is an apocalyptic number.

It is an amenable number.

70512145 is a deficient number, since it is larger than the sum of its proper divisors (22494755).

70512145 is a wasteful number, since it uses less digits than its factorization.

70512145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116576 (or 116565 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 70512145 is about 8397.1510049540. The cubic root of 70512145 is about 413.1311818603.

It can be divided in two parts, 70 and 512145, that added together give a palindrome (512215).

The spelling of 70512145 in words is "seventy million, five hundred twelve thousand, one hundred forty-five".